Patent US3251010A successfully refreshed from Google Patents.
US3251010A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-terminal lossy resonant filter for suppressing interference frequencies in ignition systems
Assignee: Robert Bosch GmbH
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Filing: 1961-03-29
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Granted: 1966-05-10
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Expires: 1981-03-29
Abstract
No abstract record available.
Inventors
- 👤 Kirchgessner Leo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:27
CPC Classifications
H; H01; H01T; H01T13/00; H01T13/40; H01T13/41; H01T13/02; H01T13/04; H01T13/05; H04; H04B; H04B15/00; H04B15/02; H04B15/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
ATTENUATION DIPOLE FOR BLOCKING INTERFERENCE OSCILLATIONS IN THE HIGH VOLTAGE PORTION OF MOTOR IGNITION CIRCUITS, COMPRISING, REACTANCE MEANS HAVING TWO TERMINALS AND INCLUDING IN PARALLEL CONNECTION CAPACITANCE MEANS AND INDUCTANCE MEANS SELECTED IN RELATION TO ONE ANOTHER SO AS TO DETERMINE A RESONANCE FREQUENCY THEREOF LOCATED WITHIN THE RANGE OF HIGH FREQUENCY OSCILLATIONS WHICH ARE TO BE BLOCKED, SAID INDUCTANCE MEANS INCLUDING COIL MEANS MADE OF RESISTANCE WIRE HAVING A RESISTIVITY AND BEING DIMENSIONED FOR BEING CAPABLE OF BLOCKING BY ITS OHMIC RESISTANCE OSCILLATIONS AT FREQUENCIES IN A RANGE SUBSTANTIALLY BELOW THAT OF SAID HIGH FREQUENCY OSCILLATIONS, THE RATIO BETWEEN THE INDUCTANCE OF SAID INDUCTANCE MEANS AND SAID OHMIC RESISTANCE IN RELATION TO SAID RESONANCE FREQUENCY BEING WL/R LARGER THAN 1, WHEREIN W IS THE RESONANCE FREQUENCY, L IS THE INDUCTANCE AND R IS THE OHMIC RESISTANCE.
Claim 2
Dependent Claim
137 words
ATTENUATION DIPOLE FOR BLOCKING INTERFERENCE OSCILLATIONS IN THE HIGH VOLTAGE PORTION OF MOTOR IGNITION CIRCUITS, COMPRISING, REACTANCE MEANS HAVING TWO TERMINALS AND INCLUDING IN PARALLEL CONNECTION CAPACITANCE MEANS AND INDUCTANCE MEANS SELECTED IN RELATION TO ONE ANOTHER SO AS TO DETERMINE A RESONANCE FREQUENCY THEREOF LOCATED WITHIN THE RANGE OF HIGH FREQUENCY OSCILLATIONS WHICH ARE TO BE BLOCKED, SAID INDUCTANCE MEANS INCLUDING COIL MEANS MADE OF RESISTANCE WIRE HAVING A RESISTIVITY AND BEING DIMENSIONED FOR BEING CAPABLE OF BLOCKING BY ITS OHMIC RESISTANCE OSCILLATIONS AT FREQUENCIES IN A RANGE SUBSTANTIALLY BELOW THAT OF SAID HIGH FREQUENCY OSCILLATIONS, THE RATIO BETWEEN THE INDUCTANCE OF SAID INDUCTANCE MEANS AND SAID OHMIC RESISTANCE IN RELATION TO SAID RESONANCE FREQUENCY BEING WL/R LARGER THAN 1, WHEREIN W IS THE RESONANCE FREQUENCY, L IS THE INDUCTANCE AND R IS THE OHMIC RESISTANCE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |